Welt-indenting machine.



T. J. MACMURTRY, JR.-

WELT INDENTING MACHINE.

APPLICATION FILED OCT-26.1917

Patented Jan. 7, 1919.

ETMX

removal of the guard from the tool when desired, and permitting required adjustthe upper from A being ITED STATES PATENT OFFIGE;

THOMAS J. MACMUBTRY, JR., OFBEVERLY, MASSACHUSETTS, ASSIGNOR, BY MESNE- 'ASSIGNMENTS, '10 UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW

JERSEY, A CORPORATION OF NEW J ERSEY. V i

WELT-INDEN'IING MACHINE.

Specification of Letters Patent.

Patented Jan. '7, 1919.

Application filed October 26, 1917. Serial No. 198,613.

To all whom it may concern:

Be it known that I, THOMAS J. MAO- MURTRY, Jr., a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Welt-Indenting Machines; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to welt indenting machines and more particularly to that type of welt indenting machines which employs a. rotary. tool, known commercially. as wheelingsm achines.

In machines of this type the tool, by which the impressions or indentations are made in the marginal portion of the sole, is usuallyheated to render the indentations firm and lasting. It has been customary heretofore to employ a metal guard or shield, which extends between the end of the tool'and the upper of'the shoewhich is being operated upon, in order to prevent injured by the tool during its operation. It has been found that if metal is employed for the material 'of these guards, the heat of the tool is transmitted to the guard and the upper is discolored by rubbing against the heated guard. To overcome this difficulty it has been proposed to use a guard of some material other than metal which will not transmit heat from the tool. To this end guards have been made of rawhide and of canvas, but as they wear out rather quickly their renewalhas caused inconvenience and loss of time; I

The object of the present invention is to provide a guard or shield having the desired qualities which can be renewed with a minimum loss of time. An ancillary object is to provide a mounting, permitting ments.

' The features of the invention through which these objects areaccomplished will be explained in the following description which is elucidated by the acc panying drawings illustrating the preferred form of the invention, in which:

Figure 1 is a side elevation of a portion of a welt indenting machine of the type illustrated and described in Letters Patent of the United States No. 1,173,364, dated February 29, 1916, granted to United Shoe Machinery Company as assignee of Harry G. McClure and John J. Heys, having the present improved guard or shield applied to the tool thereof; and Fig. 2 is a plan of the parts shown in Fig. 1 lookingin the direction of the arrow A.

In the embodiment of the invention illustrated in the drawings the frame 2, work supporting table a, rotated by the gear 6 carried on the sleeve 8 journaled on the frame, the table tipping frame 10, the rotating indenting tool 12 journaled in its vibrating tool carrier 14:, having a bearing on the shaft 8, and the driving shaft 16, rotated by the belt 18 on the pulley 20; all may be of the same construction and design as'like parts in the-patent to McClure and Heys hereinbefore referred to. The present invention distinguishes from the machine of said patentby being provided with a boss 22 rising from the frame 2' in the rear of the tool carrier 14 to which is secured a tool guard frame 24. The frame .24 comprises two side plates (best shown in Fig. 2) which bend to the "right so as to extend symmetrically at each side of the tool 12 which is 011' center relative to 'the table, as in saidpatent, and these plates are connected by a rear tie plate 26 which 'bears against'and is adiustably bolted to the boss 22 by the bolt 28. The side plates are of general triangular shape and at the iupper angles thev are further tied together by a hub 30 (Fig. 2). Within the hub 30 the upper of the shoe being operated upon I (indicated by vdotand dash lines, .Fig. 1). From each side arm of the tool carrier there projectsa ,lug 4:0 and on each lug there is secured a pivoted dog 42 each having its 5 face adjacent the carrier eccentric to its pivot and preferably provided with teeth 44. Lying between the dogs and side arms and running over the curved ends 36 and across the tool 12 is a strip ofmaterial 456, preferably canvas or rawhide, which comprises the guard orsshield .for protecting the shoe up er.

The wor ting position of the tool guard carrier is determined with accuracy by the adjustment of a screw 48 (Fig-1:) carried on one:of the side platesof the tool guard frame 24, against which a lug 50 on the carrier abuts. The tool guard carrier is :locked .against upward movement, when in working position, by a second lug 52' (Fig. 2) on the carrier, at the rear of the pivot pin 32, lbearing on a latch F54, pivoted on a :pin356 (dotted lines Fig. 1.) carried on one of rthe-side plates of the tool guard frame 24:. The latch 54 is spring pressed toward the carrier by a suitably connected spring -58 thereby beingcontinua'lly maintained in position to engage :beneath the lug :52 when- :ever the tool guard "carrier :is in working position. The carrier is removed from working {position by 'withdrawing the latch from beneath its lug and then turning :the carrier aupward about its fulcrum :on the i'endso'f the :pivot pin 32, which pin, it "will .be -(noted, is located sufficiently above the #5001 .12'to provide for the guard clearing the "tool as the carrier describes its arc o'f movement.

In .order to permit adjustment ofithe tool 1 guard 1 carrier, to accommodate it to difi'erent sizes of indenting-toolsgthe sleeve30 is bored eccentrically and'one projecting end of the pivot pi-n32 is provided with a screw head, .as at .60 (Fig, By loosening the set screw 62, which secures the pivot pin in place, and rotating the pivot pin the side arms of the carrier may be moved to :bring their curvedends 36 into proper vrelationrto the-end of "the tool being used. Preferably the guard, when lying against the-ends 36, 1s 1n contact with the end of the tool. Asa result of such an adjustment the position of the ;-stop lug F52 will be changed. Conse- .quently the latch pin 56 is also :provided with an eccentric, as shown by dotted lines in .Fig. 1, having a screw head 64L which may be turned to raise or lower the latch as may .be necessary to maintain its proper re- :lation .to the stop lug.

In -,practice, if canvas tape is used as the guard material, a piece of indefinite length will .be held in place by the dogs 42 as indi- ,cated by ,the'tape roll 66 in Fig. ,2. As any portion over the tool 12 awears ong-the dogs 66 are loosened, a fresh portion of the tape is.

.ner for any other flexible guard material drawn laterally across :the tool and, after turning down the dogs to hold the tape taut, work may immediately be resumed. The renewal of a worn section is made .in .likema'nwhich may be used.

Having thus described the preferred form of the invention and its mode of operation, the scope of the invention will be found defined in the following claims.

Whatis claimed as new, is:

1. In a machine for operating on the marginal portions of .thesole-of 1asted=shoes ,a tool; a guard between the tool and :the upper; and means for holding The guard in position,: constructed and arrangedito .permit theguard to vbe imoved :laterally across the tool to bring zthexwear upon different z'por- .tions vo'frthe-guard.

2. In a machine :for. operating on :themarginal portions .of :the sole .of "lasted :shoes, a

tool for operating ron said :portion of the shoe, :a .guard, .comprising an elongated strip, between the tool andxthe upper; :and :means for-holding the strip in position-while permit-ting it :to :be shifted, relative to the tool,'in thefdirection of :its length. V

=In amachine :for operating.onithermarginal portions of the sole of 'lastedshoespa tool :for operating :on said portion of the shoe, an elongated flexible :guard for .the

tool; aguard holder; and means 'for;sustain- 'ing :the guard on its :holder permitting :dif- 'ferent portions of the guard :to 'be brought 'betweenthe tool and the upper.

4. 111 a welt indenting :machine, a rotary tool; a :guard comprising a strip :of material considerably longer than the "diameter'ofithe tool; a guard :holder "havin 'a guard supporting portion at opposite-sldes of the'tool; and clamps for securing the guard ito said supporting portions, whereby, when the clamps are loosened the guard 'mayzbei' drawn past the tool to renew a portion whioh'is worn out. V

5. In a weltindenting machine,.a:n indenting tool, a flexible guard for saidtool, a

guard holder having .a pair of arms one at either side of the tool; means for securing :thefiex-ible guard to the ends ofsaid arms and taut :across the end :of the :tool :there'between; and means for adjusting the :guard holder toward and :from {the end of the tool which is adjacent the :upperof the shoebeing operated upon.

Inia welt indenting machine, an indent- :ing tool; a flexible guard for-said :tool; a guard holder pivoted to swing .upward to carry the guard away from the tool; means to determine the operative position :of the guard wvhen the holder is swung-down; and means for latching the :guard holder in such position.

'7. .InTa-machine for operating-:omthemarginal portions of the soles of lasted shoes, 3.

tool; a guard holder comprising arms, having rounded ends, located at opposite sides of said tool; a flexible guard, secured to said holder, lying in contact With said rounded ends and brldging the space therebetween; and means for adjusting said guard holder to bring the guard into contact with the tool.

8. In a machine for operating on the marginal portions of the soles of lasted shoes, a

tool; a guard holder; carrying a guard between the tool and the upper, mounted for adjustment relative to the tool; a latch to engage a catch on the guard holder and maintain it in operative position; and means for adjusting the latch to compensate for variations in the position of the catch due to adjustments of the guard holder. v

THOMAS J. MACMURTRY, JR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of ratentl, Washington, D. G." 

